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 The United Nations at fifty: adjusting the multilateralism system (primera de dos partes).
<strong>CIENCIA ergo-sum</strong>, [S.l.], v. 3, n. 3, p. 357-362, oct. 2017.
ISSN 2395-8782.
Available at: &lt;<a href="https://cienciaergosum.uaemex.mx/article/view/7310" target="_new">https://cienciaergosum.uaemex.mx/article/view/7310</a>&gt;. Date accessed: 19 aug. 2026.